Improvement in bolts for safe-doors



JoHN FARREL o Aooo wmmo.

.f Bolts` for Safe Doors. No 121 Ovement In Patented Dec.12,1o71.

UNITED STATES ATET JOHN FARREL AND JACOB WEIMAR, OF NEW YORK, N. Y.

IMPROVEMENT IN BOLTS FOR SAFE-DOORS.

Specification forming part of Letters Patent No. 121,711, dated December12, 1871.

To all whom it may concern:

Be it known that we, JOHN FARREL and J Aeon WEIMAR, of the city andcounty of New York, ,State of New York, have invented certainImprovements in Bank-Locks; and the following is a specificationthereof, reference being had to the accompanying drawing which formspart of this specification.

Our said invention consists in the arrangement and combination, with adouble lock or with two locks, of independent bolts worked by a tramecarrying a device termed a frog, the same being operated in connectionwith a stationary fork, and with the latches or latch-bolts ot' the lockor locks, substantially as hereinafter specitied.

To enable others skilled in the art to make and use our invention, wewill proceed to describe the same.

The annexed drawing represents the invention as seen in practical useupon a door.

A is the door, the whole not being shown. B is a plate ot' metal,constituting part of a frame to which the main bolts O D are connected.This frame and with it the bolts, which are entirely independent ot thelock or locks, are worked from the outside ofthe door by a suitablehandle on a spindle, E, (dotted,) that extends inward through the door,and carries the disk or crank F having a crank-pin, I, (do.tted,)arranged in a slot in the frame or plate B. Upon a stud, J, made fast insaid plate there is mounted the device K, termed the frog. This has armsl l at the right, and at the left is ot' pointed shape, conforming to areentrant angle between the prongs of a fork, G, thatis iixed to the barH near the edge, and which may form part of the frame ofthe door. M is adouble lock or two locks havinglatches or latchbolts N O, eachcontrolled by adistinet and separate locking mechanism. Said latcheshave small lugs n o, darkly shaded for prominence; and the arms ot' thefrog abut against them, and thus prevent the retraction of the mainbolts C D when thrown out or protruded on closing and securing the door.P is a fastening-pin that is threaded into the frog, so as that it mayby turning be screwed into a hole, p, in the plate B immediately behindit, and thus fasten the frog in the normal position thereof, representedin Fig. 1. When so fastened, if both latches be locked as seen in Fig.l, it will be necessaryY to unlock both before the main bolts can beretracted. This provides for such contingencies as require that twopersons-tor example. two otticers otl a bankshall be present, and bothoiiiciate in opening the door.

On other occasions, however, it is desirable to have a lock or locks andcoacting bolts so contrived that, while it shall require the use oi' twodistinct and separate keys or combinations to se cure the door, suchdoor may be opened by the use oi' one of the keys only. ln such case thefastening-pin P is unscrcwed and withdrawn from its hole p in the plateB,releasing the frog; then the unlocking ot' one ot the latches, asshown in Fig. 2, for example, will permit the retraction ot' the mainbolts. In said Fig. 2 the upperlatch is seen unlocked and thrown down soas to clear its lug u from the corresponding arm of the frog, which,being` now free to move on its stud, the throwing back ot' the mainbolts, in manner hereinbefore speciiied, to the points indicated by thedotted lines s, will cause it to swing around into the position shown inFig. 2. A similar result ensues when the lower latch only is unlocked.Throwing it down is indicated by dotted lines in Fig. l. It will now beapparent that, when the frog is Jfastened in the position seen in Fig.l, it cannot turn on its stud, and hence the main bolts cannot beretracted until both latches have been unlocked and removed from behindthe extremities ot' the frog, as hereinbetbre explained.

Ve are aware that it is not new to have the main bolts so arranged withtwo locks that they may be retracted when either latch or latclrbolt isunlocked; or so that to permit such retraction both latches must beunlocked.

Vhat we claim as our invention, is-

The arrangement and combination, with the double lock or with two locks,of the independent bolts worked by a suitable frame carrying the frog,and operating in connection with the stationary fork and the latches ofthe locks, substantially in the manner and t'or the several pur posesspeciiied.

JOHN FARREL.

Witnesses: JACOB YVEIMAR.

ELIJAH T. SHERMAN,

SAML. WrLKrNs. (93)

